Farrell's Studies of Intertidal Communities Along the Oregon Coast Demonstrated

Farrell's studies of intertidal communities along the Oregon coast demonstrated that

A) larger species of barnacles could facilitate growth of algal communities by providing them protection from limpets, but smaller barnacles could not.
B) smaller species of barnacles could facilitate growth of algal communities by providing them protection from limpets, but larger barnacles could not.
C) succession of barnacles is driven primarily by the facilitation model.
D) species of barnacles did not impede limpets from grazing on newly settled macroalgal sporelings.